Portfolio Manager

Overview

The Portfolio Manager service will provide comprehensive position tracking, portfolio analysis, and management capabilities for the stock-bot platform. It will maintain the current state of all trading portfolios, calculate performance metrics, and support portfolio-level decision making.

Planned Features

Position Management

Real-time Position Tracking: Accurate tracking of all open positions
Position Reconciliation: Validation against broker records
Average Price Calculation: Tracking of position entry prices
Lot Management: FIFO/LIFO/average cost basis tracking
Multi-currency Support: Handling positions across different currencies

Portfolio Analytics

Performance Metrics: Return calculation (absolute, relative, time-weighted)
Risk Metrics: Volatility, beta, correlation, VaR calculations
Attribution Analysis: Performance attribution by sector, strategy, asset class
Scenario Analysis: What-if analysis for portfolio changes
Benchmark Comparison: Performance vs. standard benchmarks

Corporate Action Processing

Dividend Processing: Impact of cash and stock dividends
Split Adjustments: Handling of stock splits and reverse splits
Merger & Acquisition Handling: Position adjustments for M&A events
Rights & Warrants: Processing of corporate rights events
Spin-offs: Management of position changes from spin-off events

Portfolio Construction

Rebalancing Tools: Portfolio rebalancing against targets
Optimization: Portfolio optimization for various objectives
Constraint Management: Enforcement of portfolio constraints
Tax-aware Trading: Consideration of tax implications
Cash Management: Handling of cash positions and forecasting

Planned Integration Points

Upstream Connections

Order Management System (for executed trades)
Broker Gateway (for position verification)
Market Data Gateway (for pricing)
Strategy Orchestrator (for allocation decisions)

Downstream Consumers

Risk Guardian (for portfolio risk assessment)
Trading Dashboard (for portfolio visualization)
Reporting System (for performance reporting)
Tax Reporting (for tax calculations)

Planned Technical Implementation

Technology Stack

Runtime: Node.js with TypeScript
Database: Fast database with transaction support
Calculation Engine: Optimized financial calculation libraries
API: RESTful interface with WebSocket updates
Caching: In-memory position cache for performance

Architecture Pattern

Event sourcing for position history
CQRS for optimized read/write operations
Eventual consistency for distributed state
Snapshotting for performance optimization

Development Guidelines

Position Calculations

Cost basis methodologies
Corporate action handling
FX conversion approaches
Performance calculation standards

Data Consistency

Reconciliation procedures
Error detection and correction
Data validation requirements
Audit trail requirements

Performance Optimization

Caching strategies
Calculation optimization
Query patterns
Batch processing approaches

Implementation Roadmap

Basic position tracking and P&L calculation
Portfolio analytics and performance metrics
Corporate action processing
Advanced portfolio construction tools
Tax and regulatory reporting features

3.4 KiB Raw Blame History